Ask Honest John

Most recently answered dpf questions
I currently drive a 2010 Nissan Qashqai 1.5-litre diesel. I see that they now have a 1.6-litre diesel which offers a bit more grunt and better economy. The engine looks very complex and this makes me wary....
I have a 2010 Audi A4 diesel with approx 26,000 miles on the clock, which I purchased one year ago with 9000 miles showing from an Audi dealer, who advised me that it was an ex-rental car. It has been...
My Honda Civic 2.2 i-DTEC, which I bought last month with 5800 miles on the clock, appears to be making oil. I have done 700 miles and the level has risen at least half an inch on the dipstick since...
I currently have a Nissan Primera P12 but am considering a change. The Nissan Qashqai looks interesting. Perhaps you could tell me if the 1.6 dCI engine is a Renault derivative and if it features chain...
I am looking to replace my car with a MPV. The two options I am considering are the Ford Grand C-Max 1.6 Ecoboost petrol or the 2012 Renault Grand Scenic 1.6dCI 130. My main concern with the Renault is...
I'm looking for a new car, costing around £3500, to replace my Mazda 6. I need a diesel for long journeys with good economy, comfort and reliability. I don't do a huge mileage, so a mileage of over 80,000...
I’m looking to purchase a big seven-seater MPV. However I would only be doing 5000 miles a year, mainly for short journeys, so I’m worried about having a diesel with a DPF. Does the 2004 Ford Galaxy 1.9...
Can you please that my 59-plate VW Touran 2.0 TDI DPF Match 140PS Auto has a diesel particulate filter (DPF), and how best to look after this? I use premium diesel, should I expect problems? If so at what...
Does the Jaguar XF have a DPF and if yes, are you aware of any problems? We have had problems with our current Vauxhall Insignia and don't want a repeat.
I took my 2005 Peugeot 307 HDI XI to the Peugeot main garage this morning for a service and MoT. It has covered just 39,000 miles and was serviced by a local garage for the last two years. I have just...